40 Group RAF was formed within the command on 3 January 1939, and responsible for all equipment except bombs and explosives.

[2] One important change made within days of the Ministry's creation was it taking over the RAF aircraft storage Maintenance Units which were found to have accepted 1,000 aircraft from industry, but issued only 650 to squadrons.

These management and organisational changes bore results almost immediately: in the first four months of 1940, 2,729 aircraft were produced of which 638 were fighters, while in the following four months crucial to the Battle of Britain combat during May to August 1940, production rose to 4,578 aircraft, of which 1,875 were fighters.

[2] The foundation stone for a new Command Headquarters at RAF Andover was laid in November 1960.

[7] When the RAF took delivery of the Blue Danube nuclear weapon (in sections) the HCCL plant near Leeds was one of only four places from where 40 Group organised armed escorted road convoys direct to RAF Wittering.